I actually think some of those effects are pretty insane i like the text especially, but the render doesn't go with the rest of the sig and the whole thing is too wide and the render placement is off. Try some gradient maps to create a color scheme.
Also, the render needs to be blended in, try erasing the edges with a 65px soft brush on either like 15% flow or opacity, and add some effects over the render to blend him in
The text in this sig needs to be put closer to the render and the render needs to be a bit closer to the middle or the whole sig just needs have its width cropped.
Sig looks a bit over-contrasted, which would be fine if your render was as well, but he's not..
Overall I think the effects are good, not bad at all, and the text is better than a hell of a lot i've seen, its the render that kills it - it really looks slapped on there.

And welcome to the Void

PET DAMN IT MY C&C!!